Furniture-finisher



(No Model.) 3 Sheets-#Sheet 1.

C. R. EVITS 8v G. K. HURLBUT. FURNITURE PINISHER.

No. 553,806.` Patented Jan. z8, 1896..

y (No Model.) 3 sheets-sheen 2.

0. R. BVITS su G. K HURLBUT. FURNITURE FINISHBR.

No. 553,806. Patented Jan. 28, 1896.v

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4 www y ANDREW BLHMIAM. PHOTO-LFI'HQWASHINGTDMDL.

- Y 3 Sheess-Sheet 3. A C. R. EVITS & G. K. HURLBU'IYl FURNITUREFINISHER.

(No Model.)

A Narni-y;

AN DREW EGRAHAM. PHGTUUTHQWSHINGTON. D.C,

. UNITED STATES PATENT CEETCE.

CHARLES R. EVITS AND GEORGE K. HURLBUT, OF GRAND RAPIDS, MICHIGAN.

SPECIFICATION forming part of Letters Patent N o. 553,806, dated January28, 1896.

d Application filed'April 14, 1893. Serial No. 470,365. (No model.)

- T all whom t may concern,.-

Be it known that we, CHARLES R. EVITS and GEORGE K. HURLBUT, citizens ofthe United States, residing at Grand Rapids,in the county of Kent andState of Michigan, have invented a new and useful Machine for FinishingFurniture, of which the following is a specification.

Our invention relates to improvements in machines for sanding dressedlumber; and its objects are, first, to provide a machine for iinishingfurniture with which the head is readily adj usted vertically,longitudinally, and laterally to bear upon the surface of the materialbeing iinished, and, second, to provide for adjusting both thelongitudinal and the lateral motion of the head by means of stopsandpawls. We attain these results by the mechanism illustrated in theaccompanying drawings, in which- Figure l is a back elevation of ourdevice. Fig. 2 is an end elevation, and Fig. 3 is a front elevation, ofthe same. Fig. 4 is a plan of the same. Fig. 5 is an elevation and atransverse vertical section of the rubber-head.

and its operating-levers. Fig. 7 is a vertical section of thesander-block. Fig. 8 is a transverse vertical section of theratchet-Wheel and its attachments. Fig. 9 is a detached elevation of thelever that operates the pawl. Fig. l0 is a pian of the adjustable platethat supports the head; and Fig. 11 is a section of the sander orfinishing block with an oil-cup, necessary in finishing, attached toconduct oil to the finishing-pad.

Similar letters refer to similar parts throughout the several views.

Our appliance is supported upon any suitable form of frame, as A,provided with a bed A fitted to receive clamps a a to support the stockwhen being worked. To the back of the frame we secure tracks orcarriage-ways B for the support and free adjustment of the carriage C,which is fitted with ways arranged to engage with the tracks and holdthe carriage steady. This carriage is driven by a crank J through themedium of the pitinan I, said crank being arranged, by means of the sloty' or other suitable means, to adjust the length of the stroke of thecarriage, and is driven upon a shaft K, the speed being ad- FiO. 6 is anelevation of the pawl and ratchet-Wleelv vjustalole by the use of thecone-pulley K in the usual manner. The carriage C extends upward abovethe top of the frame and terminates in a guideway C/ for the transversecarriage D. This carriage has a broad end D vfor the support of theadjusting-block E, and is provided Withra screw Q secured at one endinto the end D of the carriage and at the other end into the backcross-bar d thereof, and passes through the end girts cH'c of' thecarriage-ways C.

Our appliance for moving the transverse carriage D longitudinally, so asto give the sander-block G a lateral motion to traverse the Width of thestock to be finished, consists of a lever M, provided with a long hub Mfitted with an aperture through it longitudinally, as m', to fit overthe screw Q and allow it to pass through freely, areversibleratchetwheel P having an aperture m through it longitudinally andprovided with a screw-thread arranged to mesh freely with thescrew-thread on the screw Q, so that the turning of the ratchet-wheelwill cause the screw, and with it the carriage, to travel lengthwise ineither direction desired. At the upper end of the lever M we form an armM that extends above the ratchet-Wheel P far enough to receive therocking pawl O, which is pivoted thereto, as at O, in position so thateither end may be thrown in position to mesh with the teeth on theperiphery of the ratchetwheel.

Our appliance for manipulating the pawl O consists, in this instance, ofa lever N attached to a shaft N ,that `passes through the arm M of thelever, and is provided at the opposite end with two spring-arms O2,arranged to bear upon the lower side of the pawl to throw it in eitherdirection, and the pin O projects beyond the surface of the arm, as inFig. 8, far enough so that the lever N will spring back of it, as inFigs. 6 and S, and will hold the pawl to one side, as shown in Fig. 6,though we do not restrict ourselves to this particular construction, asany construction in ordinary use for performing this office will answerequally as Well. It is evident that to reverse the motion of theratchet-wheel it is simply necessary to spring the lever iT out, asindicated by the dotted lines in Fig. 8, and carry it to the oppositeside of the pin C',

IOO

when the opposite arm of the pawl will be thrown in position to engagewith the teeth on the opposite side of the arm M'. This lever,ratchetavheel, and pawl are supported upon the screw Q between thebearings c c of the carriage-way C, the hub I being intended to passthrough and form a bearingin the front bearing c".

The supporting-block E is pivoted to the 1o front surface of the end Dof the carriage D,

and is held in place by the screws or bolts e, and is made adjustable bymeans of the slots c', the frontsurface thereof being provided with adovetailed bearing 71,, fitted to receive the dovetailed rib 7L on theback surface of the head F, and its upper surface has an aperture 7L3 toreceive the end of the adjusting screw H. NVhen designing this block foradjustment, as indicated in Fig. 3, we form a zo pivotalhub E upon itsback surface designed to engage with a corresponding depression in thefront surface of the end D of the carriagc D. Y

The head F is provided upon its back sur 2 5 face with a dovetailed rib7L', adj usted to work 3o of this screw is supported in the aperture 7b3in the block, so that the head may be readily raised and lowered by itsuse in the usual way. XVe form an aperture through the entire length ofthis head, the upper end of which is 3 5 fitted to receive theadjusting-bolt F and the lower end to receive the shaft G2 an d thespring S. Te also form a slot f from this aperture through the front ofthe head at the lower end for the reception and free action of the slide4o F", the outer portion of which slide projects over the surface of thehead, as shown in Figs. 3 and 5, and is provided with a notch F'l forthe reception of the correspondin g bearing on the end of the lever Fi",this lever being pivoted to the surface of the head, as at f5, so thatby throwing the upper end over to the position indicated by the dottedlines F" the plate F", and with it the sanding or iinishing block, willbe raised, as indicated by 5o the dotted lines in Fig. 5. Thefinishing-block G is held down and adjusted to the surface of thematerial being worked by means of the spring S acting upon the shaftlf2, the tension of said spring being regulated by means of the adjusting-bolt F', which is made with an aperture through it longitudinallyfor the reception and free action of the upper end of the shaft G2.

To the lower end of the shaft G2 we attach 6o a supporting clamp or headG', pivoted to provide for the lateral adjustment of the iinishing-blockto the surface of the material by means of the pivot-pin d.

The iinishingblock G is provided with a central body or support G", thatprojects slightly below the lower edges of the sides and is fitted forthe reception of the sandpa per or rubbing material g. It has at eachend a shaft ,or drum g, upon which to wind the sandpaper, the., and isso arranged that a lon sheet of this material may bepstored thereon, asindicated in Fig.- 7, and held rigidly to place by means of the pawlsand ratehets Gf". This block is secured in the clamp G by means of thebolt or screw q, upon which it is pivoted so as to allow of its endwiseadjustment upon the surface of the material being finished, saidmaterial being presumed to be held to place upon the bed A by means ofthe guides u.

To provide for automatically operatin the lever M we place a stop L atproper points or positions, so that the lower end of the lever will comein contact therewith 'at each end of the stroke of the carriage C andthrow it to the opposite side,thus throwing the pawl O in contact withthe teeth on the ratchet-wheel and turning the same on the screw Q atone end of the stroke, and carrying it back to engage with another ofsaid teeth at the other end of the stroke in the usual way, thus movingthe transverse carriage D longitudinally to traverse the width of thebed at the same time that the main carriage C is travelinglongitudinally of the bed, as set forth.

Then rubbing varnished furniture, instead of hand rubbing oil may beapplied directly to the material being rubbed, or it may be stored inany convenient form of oiler attached to the machine to feed the oilautomatically, as at R in Fig. 1l.

In some instances we find it necessary to remove the bed A and the frontgirt A of the frame to make room for large pieces of furniture thatcannot be placed between the bed and the rubber or sander head."l

To hold the leverF3 to position when thrown over to F we provide anordinary springcatch and lever f', pivoted to the main lever at f4 andhaving a pointjV13 to engage with the aperture f in the head and aspring f2 in common use.

The stops L may be adjusted to the stroke of the pitman I by slidingthem in the desired direction upon their supporting-rod L, which issecured by the standards L2.

YVe do not desire to restrict ourselves to the precise constructiondescribed and shown, as each of the several parts of our device may beconsiderably modified without departing from the spirit of ourinvention; but

Vha-t we claim as new, and desire to secure by Letters Patent of theUnited States, :is-

l. The combination in a furniture-finisher of a supporting-frame andbed, a carriage and driving mechanism for operating the same; with atransverse carriage, a screw, a lever, a pawl and a ratchet-wheel, andstops for operating the transverse carriage, an adjustablesupportingblock, and an adjustable finishing head, substantially asshown and described.

2. The combination, in a furniture-iinishcr, of a supporting-frame andbed, a direetact ing carriage, and mechanism for operating the IOC) IIO

same, a transverse carriage and lmechanism for operating the same and afinishing-head; With an adjusting-screw, an adjusting-bolt, an adjListing-spring, anv adjustable supporting-bolt, a slide, and an adjListing-lever connected with said head, and a finishing-block,substantially as shown. j

The Combination in a fuiniturenisher, of a supporting-frame and bed, adirect-aeting, and a transverse Carriage and mechanism for operatingthem, an adj ustablehead,

an adjustable supporting-shaft, and a spring and lever for operating thesame; with a clamp pivoted to the lower end of said shaft adjustablelaterally, and a finishing block pivoted into said clamp, Withlongitudinal adjustment, substantially as and for the purpose set forth.

4. The combination in a furniture-iinisher of a supporting-frame andbed, a direct-act-V ing', and a transverse carriage, and meehau- Inpresence ofv C. CHESTER DAVIDSON, ITHIEL J. CILLEY.

